Can electroweak baryogenesis survive the electron EDM bound? · revision history

Revision 2

Accepted · core change · record

Changes against revision 1:

Title
Can electroweak baryogenesis survive the electron EDM bound?
Plain
The asymmetry could have formed when the Higgs field switched on, but that needs new CP-violating forces near the weak scale. Such forces would also give the electron a tiny electric dipole, which has not been seen.
Precise · changed · core
Revision 1: Determine whether any model with a strongly first-order electroweak transition and CP violation sufficient for $\eta_B \sim 6e-10$ is consistent with |d_e| < 4.1e-30 e cm (JILA, 2023) and LHC Higgs data. An answer is an explicit viable model with predicted signals, or a general exclusion argument.
Revision 2: Determine whether any model with a strongly first-order electroweak transition and CP violation sufficient for $\eta_B \sim 6 \times 10^{-10}$ is consistent with $\mid d_{e} \mid <$ $4.1 \times 10^{-30}$ e cm (JILA, 2023) and LHC Higgs data. An answer is an explicit viable model with predicted signals, or a general exclusion argument.
Settled by · changed · core
Revision 1: Next-generation electron EDM measurements (sensitivity $\sim 1e-31\,e\,\mathrm{cm}$) combined with Higgs self-coupling and singlet-mixing measurements.
Revision 2: Next-generation electron EDM measurements (sensitivity $\sim 10^{-31}\,e\,\mathrm{cm}$) combined with Higgs self-coupling and singlet-mixing measurements.
Kind
well-posed
Answer type
yes-no
References
(empty)
Literature status
open
Status note
Most minimal two-Higgs-doublet realizations are excluded by EDMs; models with CP violation in a dark or flavored sector remain.
Posed since
1985

Decisions